小麦胚芽の養魚飼料効果に関する研究-V : アユおよびニジマスにおける飼料効果

概要

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In the previous papers 1-4), the authors pointed out the excellent nutritive values of wheat germ as diet for carp, Cyprinus carpio. The present paper deals with the nutritive values of a formulated diet with wheat germ and white fish meal for young ayu, Plecoglossus altivelis and young rainbow trout, Salmo gairdneri f. irideus. The procedures for the feeding experiments were essentially identical with those of the carp. Results of the feeding experiments showed that both defatted wheat germ and white fish meal improved the nutritive values when used as a mixed diet as compared to being used singly for young ayu and rainbow trout as in the case of carp. It was shown that the most excellent nutritive values were obtained at the mixing ratio of 50:50 for ayu and 25:75 for rainbow trout and the protein concentrations of the diets were nearly 50 and 60 percent respectively.
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